Any person receiving a permit to make excavations in or upon any street, alley, sidewalk, or public ground shall, during the progress and continuance of the work, erect and maintain around the same both by day and night suitable guards, fences, flares, and signals so as to prevent injury to persons, animals, or vehicles on account of such excavations. Such flares shall be kept lighted from sundown until sunrise.
(Prior Code, § 11-6-4)